package com.mx.mapper;

import com.mx.pojo.Emp;
import org.apache.ibatis.annotations.*;

import java.time.LocalDate;
import java.util.List;

@Mapper
public interface EmpMapper {


    //根据ID删除数据
    @Delete("delete from emp where id =#{id}")
    public void delete(Integer id);
//    public int delete(Integer id);

    //新增员工
    @Options(useGeneratedKeys = true,keyProperty = "id")
    @Insert("insert into emp(username, name, gender, image, job, entrydate, dept_id, create_time, update_time)" +
            " values (#{username},#{name},#{gender},#{image},#{job},#{entrydate},#{deptId},#{createTime},#{updateTime})")
    public void insert(Emp emp);


    //更新员工
    @Update("update emp set username = #{username},name = #{name},gender = #{gender},image=#{image},job=#{job}," +
            "entrydate=#{entrydate},dept_id=#{deptId},update_time=#{updateTime} where id = #{id};")
    public void update(Emp emp);

    //方案三: 开启Mybatis的驼峰命名自动映射开关--- a_cloumn ----> aCloumn
    @Select("select * from emp where id = #{id};")
    public Emp getById(Integer id);
    //根据ID查询员工
//    @Select("select * from emp where id = #{id};")
//    public Emp getById(Integer id);

    //方案一: 给字段起别名, 让别名与实体类属性一致
//    @Select("select id,username,password,name,gender,image,job,entrydate,dept_id deptId,create_time createTime,update_time updateTime from emp where id = #{id};")
//    public Emp getById(Integer id);

    //方案二: 通过@Results, @Result注解手动映射
//    @Results({
//            @Result(column = "dept_id",property = "deptId"),
//            @Result(column = "create_time",property = "createTime"),
//            @Result(column = "update_time",property = "updateTime")
//    })
//    @Select("select * from emp where id = #{id}")
//    public Emp getById(Integer id);

    //条件查询员工
//    @Select("select * from emp where name like '%${name}%' and gender = #{gender} and" +
//            " entrydate between #{begin} and #{end} order by update_time desc;")
//    public List<Emp> list(String name, Short gender, LocalDate begin, LocalDate end);

//    @Select("select * from emp where name like concat('%',#{name},'%') and gender = #{gender} and" +
//            " entrydate between #{begin} and #{end} order by update_time desc;")

    //动态条件查询
    public List<Emp> list(String name, Short gender, LocalDate begin, LocalDate end);

    //动态更新员工
    public void update2(Emp emp);


    //批量删除员工
    public void deleteByIds(List<Integer> ids);
}
